Methods of Packaging Using Multi-Compartment Containers

ABSTRACT

A method of packaging products in a multi-compartment container. The method comprises providing a first container and a second container and coupling, in a substantially permanent manner, the first and second containers at bottom ends in a stacked arrangement to form the multi-compartment container. The method also includes placing a first product into the first container, placing a second product into the second container, and sealing the first and second containers. The products may be placed in the containers before or after the containers are coupled together.

CROSS-REFERENCES TO RELATED APPLICATIONS

This application is a divisional application of application Ser. No.10/948,837, entitled “Multi-Compartment Container” (Attorney Docket No.021849-000110US), which claims priority to Provisional Application No.60/505,410, entitled “Multi-Compartment Container,” filed on Sep. 23,2003 (Attorney Docket No. 021849-000100US), the disclosures of which areincorporated herein by reference in their entirety for all purposes.

BACKGROUND OF THE INVENTION

1. Field of the Invention

The present invention relates to multiple compartment storage devices,and more particularly, to a multiple-unit storage device thatessentially consists of two separate containers coupled together attheir bottom portions in a stacked arrangement.

2. Description of the Prior Art

In the packaging of certain products where freshness is a concern, it isdesirable to have multiple compartments in which one part of thecontainer may be opened, while another part of the container may be leftsealed. By way of example, one such product is coffee. Coffee isgenerally packaged in a container under vacuum. When coffee is exposedto atmospheric conditions, it may lose its aroma and flavor. Thus, whena can of coffee is opened, the entire contents of the can is exposed tosuch atmospheric conditions due to the loss of the vacuum conditions.

BRIEF SUMMARY OF THE INVENTION

Broadly, the present invention provides a multi-unit storage devicewhere two separate containers are held together at their bottomportions. Preferably, the separate containers are vacuum sealed at theirtop portions such that when the top portions are opened, the vacuum sealis broken and access to the products contained therein is provided.

In accordance with one aspect of the present invention, a multi-unitstorage device comprises a first container comprising a top portion anda bottom portion, a second container comprising a top portion and abottom portion, the first and second portions being substantiallypermanently coupled together at their bottom portions in a stackedarrangement, and at least one removable lid for coupling to a topportions. Each of the two separate containers is individually vacuumsealed at their respective top portions.

In accordance with another aspect of the present invention, eachcontainer is a one-piece container.

In accordance with a further aspect of the present invention, eachcontainer includes ribs defined within a sidewall.

In accordance with another aspect of the present invention, eachcontainer comprises a cylindrical sidewall and a bottom.

In accordance with yet another aspect of the present invention, thefirst and second containers are coupled together via welding.

In accordance with a further aspect of the present invention, the firstand second containers are coupled together via an adhesive.

The present invention also provides a method of packaging at least onetype of product, where the method comprises providing first and secondseparate containers comprising top and bottom portions, coupling, in asubstantially permanent manner, the first and second separate containerstogether at their bottom portions in a stacked arrangement to form amulti-unit storage container, placing product into the first container,placing product into the second container, and vacuum sealing the twoseparate containers at their top portions.

In accordance with one aspect of the present invention, the product isplaced into each container prior to the two separate containers beingcoupled together.

In accordance with another aspect of the present invention, the productis placed into each container after the two separate containers havebeen coupled together.

In accordance with a further aspect of the present invention, the methodcomprises placing a removable lid over at least one top portion afterthat container has been vacuum sealed.

Other features and advantages of the present invention will be apparentupon review of the following detailed description of preferred exemplaryembodiments.

BRIEF DESCRIPTION OF THE DRAWINGS

FIG. 1 is an elevation view of two containers for a multi-unit storagedevice in accordance with the present invention; and

FIG. 2 is an elevation view of the two containers forming a multi-unitstorage device in accordance with the present invention

DETAILED DESCRIPTION OF THE INVENTION

With reference to FIGS. 1 and 2, a multi-unit storage device 10 inaccordance with the present invention is illustrated. Preferably, themulti-unit storage device consists of two containers or cans 11, 12,preferably made of metal, that are welded together at their bottomportions 13, 14. Glue or some other type of adhesive may also be used.

The top portions are preferably vacuum sealed with either metal, foil,plastic or any other suitable material. Examples for the two separatecontainers include coffee cans, nut cans, potato chip cans, and othertypes of snacks. Preferably, lids 15 are provided for closing orresealing the cans 11, 12.

The separate cans may be made in any manner known in the prior art.Early methods of making such cans included rolling a metallic body orsidewall 16 and coupling a metallic bottom 17 to the body portion with afolded or sealed flange. Additionally, the bottom may be coupled to therolled body with a welding-type process. Modern methods include stampingor forming the bottom and body as a single piece. When the bottom andbody are made of a single piece, ribs or troughs 18 may be definedcircumferentially in the body or sidewall as is known in the art toprovide extra strength and stability.

Another example of a type of container that may be used as thecontainers to form the multi-unit storage device in accordance with thepresent invention includes a cardboard or plastic body 16 with a metal,or plastic bottom 17. The containers may also be made of one-piececonsisting of plastic or other suitable material. Examples of such acontainer include orange juice cans, nut cans, some potato snack cansand other snack cans.

In use, two containers 11, 12 as described above are provided and arecoupled together at their bottom portions 13, 14. Each can or containeris filled with a product and then individually vacuum sealed. This maybe done before or after the two containers are coupled to one another.Each container may be filled with the same product or a differentproduct. Examples of products include, but are not limited to, coffee,nuts, potato chips, candy, tea, etc.

When one desires access to a product, one simply opens one container.Thus, the second container remains unopened, thereby protecting theproduct therein from the elements and helping maintain freshness. Whenaccess to the second container is desired, then the multi-unit storagedevice is “flipped” and the second container is opened. Each containermay be closed with lids 15 if provided. One lid may be provided and usedfor both containers if desired.

Additionally, each separate container may be filled with a differentproduct if it is so desired. For example, one container may includepotato chips while the second container may include corn chips.

The foregoing descriptions of specific embodiments of the presentinvention have been presented for purposes of illustration anddescription. They are not intended to be exhaustive or to limit theinvention to the precise forms disclosed, and obviously manymodifications and variations are possible in light of the aboveteaching. The embodiments were chosen and described in order to bestexplain the principles of the invention and its practical application,to thereby enable others skilled in the art to best utilize theinvention and various embodiments with various modifications as aresuited to the particular use contemplated. It is intended that the scopeof the invention be defined by the Claims appended hereto and theirequivalents.

1. A method of packaging products in a multi-compartment container, the method comprising: providing the multi-compartment container having a first container and a second container, wherein the first and second containers are separate containers substantially permanently coupled together in a stacked arrangement to form the multi-compartment container; placing a first product into the first container; placing a second product into the second container; and sealing the first and second containers.
 2. The method of claim 1 wherein each of the first and second containers comprises a top end providing access when opened, a substantially cylindrical wall, and a substantially flat bottom end.
 3. The method of claim 2 wherein the first and second containers are substantially permanently coupled together at the bottom ends with an adhesive or welding.
 4. The method of claim 2 wherein the substantially cylindrical wall and the bottom end of each of the first and second containers are formed of a one-piece construction.
 5. The method of claim 2 wherein the substantially cylindrical wall and the bottom end of each of the first and second containers are coupled together in a two-piece construction.
 6. The method of claim 1 wherein sealing the first and second containers comprises sealing at top ends of the first and second containers.
 7. The method of claim 1 wherein sealing the first and second containers comprises sealing the first container after the first product is placed into the first container and sealing the second container after the second product is placed into the second container.
 8. The method of claim 1 wherein sealing the first and second containers comprises individually vacuum sealing each of the first and second containers at the top ends.
 9. The method of claim 1 wherein the first product is placed into the first container and the second product is placed into the second container after the first and second containers are substantially permanently coupled together.
 10. The method of claim 1 wherein the first product is placed into the first container and the second product is placed into the second container before the first and second containers are substantially permanently coupled together.
 11. The method of claim 1 wherein at least one of the first and second containers is made of metal.
 12. The method of claim 1 wherein at least one of the first and second containers is made of plastic.
 13. A method of packaging products in a multi-compartment container, the method comprising: providing a first container and a second container, wherein each of the first and second containers comprises a top end providing access when opened, a substantially cylindrical wall, and a substantially flat bottom end; coupling, in a substantially permanent manner, the first and second containers at the substantially flat bottom ends in a stacked arrangement to form the multi-compartment container; placing a first product into the first container; placing a second product into the second container; and sealing the first and second containers.
 14. The method of claim 13 wherein the first and second containers are substantially permanently coupled together at the substantially flat bottom ends with an adhesive or welding.
 15. The method of claim 13 wherein the substantially cylindrical wall and the bottom end of each of the first and second containers are formed of a one-piece construction.
 16. The method of claim 13 wherein sealing the first and second containers comprises individually vacuum sealing each of the first and second containers at the top ends.
 17. The method of claim 13 wherein sealing the first and second containers comprises sealing the first container after the first product is placed into the first container and sealing the second container after the second product is placed into the second container.
 18. The method of claim 13 wherein the first product is placed into the first container and the second product is placed into the second container after the first and second containers are substantially permanently coupled together.
 19. The method of claim 13 wherein the first product is placed into the first container and the second product is placed into the second container before the first and second containers are substantially permanently coupled together.
 20. The method of claim 13 further comprising placing a removable lid over the top end of one of the first and second containers. 